Sharp GP2Y0A41SK0F Infrared Distance Sensor (4-30cm)

The Sharp GP2Y0A41SK0F is a sophisticated infrared sensor that operates in the analog domain and specializes in distance measurement ranging from 4 cm to 30 cm. This sensor functions by emitting infrared light towards an object and then translating the reflected signal into an analog voltage output. This process ensures consistent and reliable proximity sensing.The distance values generated by this sensor are primarily based on tests conducted with white paper, which has a reflectivity of 90%. However, the sensor also performs well with gray paper, exhibiting only a slight variation in values despite its lower reflectivity of 18%.It's important to note that the sensor's output voltage does not have a linear correlation with the measured distance. Instead, it follows a 1/X relationship. This characteristic makes the sensor particularly suitable for applications requiring proximity detection.

Specifications

• Dimensions: 29.5 mm x 13 mm x 13.5 mm
• Operating Voltage: 4.5V - 5.5V
• Operating Current: 12 mA (max 22 mA)
• Measuring Distance: 4 cm - 30 cm
• Output Voltage (at 30 cm): 0.25V (min), 0.4V (typical), 0.55V (max)
• Output Voltage Difference (4 cm to 30 cm): 1.95V (min), 2.25V (typical), 2.55V (max)
• Initial Response Time after Power-On: 25.2 ms (max)